Saudi King Salman called on governments around the world to confront the threats to oil supplies and global economic stability posed by the weekend attack. European allies said the crisis should be addressed collectively.

Trump said on Monday that it looked like Iran was behind the strike at the heart of the Saudi oil industry, which cut 5% of global production, but stressed he did not want to go to war. Iran denied it was to blame.

“Iranian officials, at any level, will never talk to American officials … this is part of their policy to put pressure on Iran,” Iranian state TV quoted Ayatollah Ali Khamenei as saying.